Safety-razor.



C. TWINING.

SAFETY RAZOR.

APPLIoATIoN FILED 0011.21, 1912.

1,1 19,327., Ptented Dec. 1,1914.

wl/vEsSES 0% Z Tim/'HUUR C( M/ aT asA mm1, M@ wg ATTORNEYS ,'HE NORR/s PETERS CIL PHOTO-urna. WASHING ION. D4 C CHARLES TWINING, OF LOCUST PGINT, NEW JERSEY.

SAFETY-RAZOR.

Specification of Letters Patent.

Patented Dec. 1, 19141.

Application filed October 21, 1912. Serial No. 726,938.

To all whom it may concern Be it known that I, CHARLES TWINING, a subject of the King of Great Britain, and a resident of Locust Point, in the county ot' Monmouth and State of New Jersey, have invented a new and Improved Safety-Razor, of which the following is a full, clear, and exact description.

The present invention relates to safety razors and more particularly to that type of safety razor in which a relatively thin blade is clamped between a bed-plate having along its edge a toothed guard, and a clamp plate.

As is well known to those familiar with this type of safety razor, the cutting edge is positioned closely to the upper surface of the toothed guard, and in use there is a tendency for the lather to pack along the edge of the blade and between it and the upper surface of the guard, andat times the edge will become clogged to suoli an extent that it rei quires the release of the clamp and a paru tial disassembling of the parts for the purpose of cleansing the edge and guard of accumulations of lather before the operation of shaving can be completed, and in any event, in such razors as heretofore constructed in order to effect a thorough cleans ing after shaving, a more or less complete disassembling of the parts is necessary.

The object of the present invention is to provide means whereby accumulations of lather along the edge and guard may be quickly removed without the necessity of disturbing the adjustment of the parts.

To the above ends, the present invention consists of a safety razor in which the bedplate is provided with a clearance groove adjacent the guard with interdental openings leading from the guard to said groove, and further, of the devices and combinations of devices which will be hereinafter described and claimed.

The present invention is shown in the accompanying drawing, in which- Figure 1 shows an isometric perspective view of the bed-plate and guard, and handle portion of one form of razor to which my invention is applicable. Fig. 2 shows an end elevation of the parts of the razor assembled for use, the lower part of the handle and the clamping nut being broken away.

Similar reference characters will be employed throughout the specification and drawing to designate corresponding parts.

`-The razor comprises a bed-plate 1, provided along its opposite longitudinal edges with toothed guards. Preferably, the bedplate 1 will be rectangular in shape longer than it is wide, and in the form of razor shown in the drawing, it will be provided with a guard 2 along each of its longitudinal edges and will be slightly curved or convexed transversely as shown clearly in Fig. 2. The bed-plate 1 is provided with a hollow cylindrical handle 8, and the blade 4 is supported upon the upper surface of the bed-plate 1 and clamped thereon by means of a clamping plate 5 which latter has a threaded shank, not shown, which passes through an opening 6 and is received into the tubular handle 3 in position to be engaged by an interior-lv threaded tubular clamping member which is adapted to be inserted in the lower end of the handle 3 in a manner well known to those familiar with razors of the type shown. The clamping plate 5 has upon its under surface two depending studs 7. one of which is shown in Fig. 2 of the drawing. which studs pass through openings in the blade 4t and through openings 8 in the bedplate 1. By turning the tubular clamping member. the threaded shank of the clamping plate 5 will be drawn downward. thus bringing the under side of the clamping plate 5 into forcible contact with the blade. and flexing or curving the blade and clamping it tightly against the upper surface of the bed-plate, as shown in Fig. 2 of the drawing.

As shown clearlv in Fig. 1, the upper surface of the bedplate l is provided ad jacent the row of teeth forming the guard 2 with a longitudinallv extending clearance groove 9. which groove extends through the ends of the bed-plate. preferablv at ea ch end as shown. and which along its outer edge coincides with the edge of the plate l which forms the base l0 of the interdental spaces 11 and thus the longitudinal groove 9 opens into the interdental spaces 11 by means of the interdental openings 12.

ln the form of ravor shown in the drawings wherein a double edged blade is used and the plate 1 has a guard along its opposite longitudinal edges. there will be longitudinallv extending clearance grooves positioned one adiacent to each of the guards.

Bv the foregoing arrangement. it will be clear that when the parts are assemble as shown in Fig. 2 with the blade ftightly clamped upon the bed-plate 1, the opposite edges of the blade a may be brought into close contact with the upper surface of the guard teeth 2, and that the accumulation of lather along the cutting edge of the vblade and between the teeth of the guard may be quickly removed by water poured upon the edge of the guard, which water will flow through the interdental openings 12 into the longitudinally extending clearance groove 9, carrying with it the lather and other matter which may have accumulated along the cutting edge, and flowing out of the groove 9 at its opposite ends.

Where the invention is embodied in a double-edged razor such as shown, the parallel longitudinally extending clearance grooves 9 will preferably be connected by a transversely extending groove. 13, and as shown in the drawing, there may be two transversely extending grooves 13 connecting the longitudinally extending grooves 9. By means of the transversely extending connecting grooves 13, the water used in cleansing mav flow fromone longitudinal groove to another and thus greatly facilitate the cleansing operation.

It will be observed that the intcrdental openings 12 permit ,the lather to pass beneath the edge of the blade into the longitudinal clearance groove, and thus the tendencv vof the lather to accumulate in the in terdental spaces of the guard and along "the,

edge is retarded, and such accumulations, as before stated, may be quickly removed without the necessity of disturbing the adjustment ofthe parts or disassembling them- Copies cf this patent man be obtained for `five cents each, by addressing; the

by the How of water passing through the interdental spaces 12 and into the longitudinal clearance groove 9, the flushing action of the water e'ecting a complete clearance of all clogging lather.

It is to be observed that in forming the clearance grooves in the bed-plate, the `portions of the bed-plate bounded by such grooves form blade supports along the longitudinal median line of the blade, and thus effectively support the flexible blade as the blade is flexed to cause it to conform to the curvature of the bed-plate.

Having thus described my invention, I claim as new and desire to protect by Letters Patent of the United States:

A safety razor comprising a bed plate having toothed guards along its parallel longitudinal edges, a blade, a clamping plate, the bed plate having parallel clearance grooves formed in its blade supporting surface adjacent the toothed guards, interdental openings connecting said clearance grooves with the openings in the guards, laterally extending connecting grooves and blade supports intermediate the clearance grooves, the blade spanning the interdental openings and engaging 'the teeth of the guards. l

ln testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES TVVINING.

litnesses:

CHas. E. Dosorrnn, FRANK A. FUREY.

Commissioner o1 'Patents` Washington. D. C," 

